How To Automate Your home with Z-Wave

November 2018
Z-Wave Smart Home Automation

When it comes to consumer level smart home tech, Z-Wave is a brand that constantly pops us. While it works completely different from LightwavRF, the two share many similarities. Since comparing the two is beyond the scope of this piece, we’ll have to settle that debate at a later date.

 

What makes Z-Wave very exciting is underlying technology, the range of available products, and it’s compatibility with a range of other protocols.

 

Plus, with big brands such as Bosch, Honeywell and Yale on board, it’s easy to see that Z-wave will only continue to grow. So where did it all start?

 

 

History

With over 18 years of history, Z-Wave has been around a long time! In 2001, a Danish company named Zensys set about to design a new way to control the home and so, the Z-Wave protocol was born.

 

Later that year, Zensys introduced a consumer light-control system. After a short while, this system evolved into Z-Wave as a proprietary system on a chip (SoC) home automation protocol, which uses an unlicensed frequency band in the 900 MHz range. As a lower power alternative to Wi-Fi, the protocol has a much bigger range than Bluetooth.

 

By 2005, our friends in the USA started developing products around the protocol, enabling users to add basic automation to their homes. It was around this time that five companies, including Danfoss, Ingersoll-Rand and Leviton Manufacturing, adopted Z-Wave. Together they formed the Z-Wave Alliance, whose objective is to promote the use of Z-Wave technology.

 

Since then the technology has grown from being included in 6 products in 2005 to over 2,400 products in 2018. Not bad for an evolving market!

 

 

System overview

A typical Z-Wave smart home has a hub, the brains of the shows as well as a number of devices which link into this hub. These devices control such things as heating, blinds, power, lighting and other functions.

 

As devices communicate wireless with each other, they create a strong mesh which improves connectivity and ensures drop-offs are virtually non-existent. And because they use a low frequency to communicate, unlike Zigbee and wifi, there’s no major interference issues.

 

Plus as a protocol used by over 700 manufactures, it’s likely there’s at least one product on the market which will solve your issue and seamlessly integrate with an existing system. Whether you use a hub from Aeon Labs with Honeywell heating controls or a Z-Wave.me RaZberry 2 PI with some Fibaro devices. Again this provides the ultimate flexibility when compared to other systems like Control4 or LightwaveRF.

 

z-wave Samsung smartthings

photo by Samsung

 

Selecting the brain

At the heart of every Z-Wave system is a hub and unlike other home automation systems, there’s a few to choose from.

 

For a long time, the Mi Casa Verde would be the one we’d often see on youtube reviews and demos. However, this unit is now discontinued. Replacing it is the VERA Edge (costs £110 from Amazon), which can control a whopping 1300 compatible devices. We’re sure you could control a palace and still have room for more devices!

 

If that’s too much or you’re looking for a sleeker unit then Aeotec Z-Stick is a superb option. At £45 from Amazon, this highly affordable USB stick can control up to 232 devices and also works with the new Z-Wave plus protocol. The only downside to the Aeotec is you’ll need to find and install software (such as OpenHAB or HomeAssistant). However, it does work with Raspberry Pi.

 

You could, however, go down the Fibaro route. The brand offers a range of hubs as well as controls and so can be used to build a large chunk of a system. Their flagship model – Fibaro FGHC2 Home Center 2 (available fom Amazon for £445) can control up to 230 devices.

 

 

Starting simple

While the three hubs above are all fantastic, if you’re slightly intimidated or unsure where to start then the Samsung SmartThings Starter Kit might be your best option.

 

Included in the Samsung kit is a hub, a plug-in-and-play socket, three sensors. It’s worth the £165 price tag. In addition to working with other Z-Wave devices and apps, you can also control the system via Google Assistant and Amazon Alexa.

 

Building a home automation system for the first time or exploring a different type of smart home, it’s best to start with one feature in a single room and build from there. For example, you can easily add smart bulbs and more plug-in-and-plug sockets, giving you near total control of your living room.

 

From there, you can expand lighting control to the whole house by using either smart bulbs or DIY retrofittable dimmers. It’s a good idea to expand slowly, giving yourself time to fully test new feature and functions. This way you can easily problem solve and not be left with a mess!

 

 

Creating your Z-Wave smart home

Let the fun begin! We’re going to build a system around the Vera Edge as it’s affordable and can control a humungous amount of devices.

 

So what will our Vera Edge control? We’ll start with the basics of lights, power and heating.

 

Power

Starting with power, currently, only plug-in-and-play devices are available. Typically these range from as low as £10 up to £55. While plug-in-and-play don’t look as nice as retrofitted sockets (such as the LightwaveRF ones), they do afford instant control without any DIY or tools.

 

Our top pick is the NEO Coolcam Power Plug, which at £32 is a little picey, but work with both Vera and Fibaro.

 

Lighting

Moving on to light. There’s plenty of options here, including a range of bulbs, dimmer modules, plug-in-and-play lamp holders and retrofit light switches. So the choice is yours!

 

In terms of prices, plug-in-and-play lamp holders are your cheapest option at £10. Whereas bulbs such as the Aeotec LED Bulb start at £30.

 

Bseed offer a range of dimmer switches with both single and double gang switches available. Of course, these will require you to replace your current light switches. Whereas Fibaro offers a range of dimmer modules, which are easily wired into the existing back box and so it’s possible to keep your light switches.

 

Heating

When it comes to heating, a few options are available depending on the type of control you’re after. At one end, there’s plenty of Z-Wave enable thermostats available, which afford basic control. If you’re looking for control over each room then there are a few TRV options on the market. These include thePopp POPE010101 Radiator Thermostat.

 

 

So with the basics covered, what else can we control?

 

Security

There’s a wide range of security products available, including camera, motion sensors, doorbells and door locks. So you can leave your home knowing that it’s safe and that you see in real time what’s happening.

 

Staying close to security, a number of blind controls are available, for example, Fibaro has a module which can control any AC device. So you can easily control blinds, garage doors or any device with a motor.

 

Home Cinema and Media

As we have a soft spot for movies, let’s explore what available in the media category. While there’s no hardware which uses Z-Wave, using Logitech Harmony Ultimate Hub, you can add further controls to your TV, DVD/BluRay and games consoles. While the Logitech costs around £100 mark, it’s a time saver and can even be run using its own app.

 

If you want to use Sonos then you’ll need to invest in a bridge in order to get the two systems to talk.

 

Control

There’s a number of apps out there include ones which enable you to combine different systems into an easy to use layout. The right option for you will depend on the hub you choose. For example, Fibaro has a fantastic app, for which there are many add-ons.  Our favourite app is the ImperiHome, which works well with any system and provides effortless control.

 

There are also a few controllers on the market enable a user to save/recall scenes. These devices are great for lighting control for example or as a way to turn everything off on your way out.

 

Fibaro z-wave system

photo by Fibaro

 

 

Issues

As an open source protocol, Z-wave is fairly easy to hack. And while security patches and updates are being added all the time, the wrong hands could cause problems. It’s therefore worth investing time in checking that you’re buying the latest version of a product and whether there are software updates available. Since nothing is completely hack proof, keeping devices up to date is often the best solution.

 

As a wireless network, devices pair with each other, and some users have experienced devices randomly unpairing with the system. And while we haven’t seen many of these issues, it’s worth rigorously testing every new device that you add. Of course, this could also be a software issue which is fixed by an update.

 

Another issue with wireless networks, in general, is wall thickness. So if you do live in a 16th-century barn conversion with metre thick walls, then you might face connectivity issues. Luckily, repeaters are available which should solve this issue.

 

 

Can I use …?

Regardless of how amazing the available product range is, it’s also worth considering how other major tech interfaces with Z-Wave.

 

LightwaveRF

While the two are in competition with each other, combining Z-Wave and LightWaveRF is extremely simple through using Athom Homey. The Homey can be used to control Zigbee, WiFi, Bluetooth, and more, creating a single unified smart home system.

 

Apple HomeKit

Again as a competing system, combining the HomeKit with Z-Wave might be tricky. Apple has released a bridge which aims to enable the two to talk, however, there are limits and restrictions. The good news is that the Athom Homey can be used to bridge the gap and enable the two to work in harmony.

 

IFTTT

Z-wave and IFTTT were built for each other! Well, not quite but the two interact with each other seamlessly.

 

Sonos

Yes, you can use all of your Sonos gear with Z-wave. However, it’s easier to combine Sonos with a Fibaro system, for example than others.

 

The Fibaro system has a Sonos app that is easily installed within the Home Center control app. If you’re using a Vera then you’ll have to invest in a bridge or use an app which can control both.

 

Amazon Alexa / Google Home

You can easily link Amazon Alexa /echo and Google Home into any Z-Wave hub and use your voice to control the system.  Pretty cool right?!

 

Robotic Vacuum Cleaners

Assuming your robot can be controlled via IFTTT, then with a bit of trial and error, you should be able to get Z-wave and your Robotic Vacuum Cleaner to work in sync.

 

 

z-wave vera control system

Copyright Vera Control, Ltd.

 

The future of Z-wave

If anything can be predicted about Z-Wave is it will continue to expand with new products and brands.

 

We would like to see more Z-Wave ready hardware come onto the market such as fridges, kettle (the Smarter iKettle looks cool!) and media devices.

 

Being able to interface with voice-activated tech means the future is already here and this put it’s ahead of most of the competition.

 

 

Overall, Z-Wave is the system we’ve been looking for. The entry price is cheap enough for anyone to get started. Plus as it’s DIY friendly, you don’t have any expensive installation costs.

 

All in all, we recommend starting with an eBay search for Fibaro products. Remember to start with one feature in a single room and build from there.